Checking The Spark Plugs - Yamaha XP500 2001 Service Manual

CHECKING THE SPARK PLUGS

CHECKING THE SPARK PLUGS
The following procedure applies to all of the
spark plugs.
1. Remove:
S center cover
S side cover (left and right)
Refer to "COVER AND PANEL".
2. Disconnect:
S spark plug cap
3. Remove:
S spark plug
CAUTION:
Before removing the spark plugs, blow away
any dirt accumulated in the spark plug wells
with compressed air to prevent it from fal-
ling into the cylinders.
4. Check:
S spark plug type
Incorrect ! Change.
Spark plug type (manufacturer)
CR7E (NGK)
5. Check:
S electrode 1
Damage/wear ! Replace the spark plug.
S insulator 2
Abnormal color ! Replace the spark plug.
Normal color is a medium-to-light tan color.
6. Clean:
S spark plug
(with a spark plug cleaner or wire brush)
7. Measure:
S spark plug gap a
(with a wire gauge)
Out of specification ! Regap.
8. Install:
S spark plug
3-18
CHK
ADJ
Spark plug gap
0.7 X 0.8 mm
Spark plug
12.5 Nm (1.25 mSkg)